temp.coffee

# Super simple templating engine
tmpl = (template, namespace) ->

  fn = (existing, fieldName) ->
    content = namespace[fieldName]
    content ?= existing
    return content

  template.replace(/\{\{([a-z0-9_]*)\}\}/ig, fn)
  
###

template = "Hello {{name}}!"
namespace = {
  name: "world"
}

templ(template, namespace)
=> "Hello world!"

###